Crater Watch: How to Catch Pothole Wheel Damage Before It Gets Expensive

Pothole season has a reputation problem. It sounds like a few weeks in late winter when councils send out the cold-planing crews and everyone moans about the A38. In reality, on the lanes around the Tamar and the back roads of Devon and Cornwall, it is less a season and more a permanent state of mind. A crater that was patched in March can be a ragged-edged trap by November. And the hit that makes you wince is only the start of the story.

The hit you feel, the damage you don't

A pothole does not just thump the tyre. It sends a shock load through the sidewall, into the rim, up the suspension and across the steering rack. A quality alloy can survive a lot, but a sharp-edged hole at 40mph is a different proposition from a gentle dip at 15mph. The damage often starts invisibly: a slight flat spot on the inner lip, a pinched sidewall, a wheel that is no longer perfectly round.

The tricky part is that many drivers notice nothing until a tyre starts losing pressure or the steering wheel develops a shimmy at motorway speed. By then, a cheap fix may have become a new tyre, a wheel refurb or a geometry session.

Five clues your wheel took a pasting

You do not need a ramp to spot the obvious stuff. After a heavy hit, find a safe place to stop and look for:

• A new vibration through the steering wheel or seat, especially at 50-70mph.
• The car pulling to one side when you brake or cruise.
• A bubble or bulge in the tyre sidewall. This is a fail, not a wait-and-see.
• A shiny scrape or flat spot on the inner or outer rim lip.
• Uneven tread wear that appears over the next few hundred miles.

A slow puncture that appears days later is another classic. So is a clunk over speed bumps, which can point to a damaged bearing or a bush that has taken a knock.

The ten-minute driveway audit

Give the car a proper look when you get home. Park on level ground, let the tyres cool, and check pressures against the door pillar or handbook figures. Run a hand around each tyre sidewall and tread, then look at the rim edge with a torch. You are checking for cuts, bulges, embedded stones and fresh kerb or pothole rash.

While you are there, check the wheel nuts. A pothole hit can loosen a nut that was already marginal. If one feels suspiciously easy to turn, stop and investigate rather than simply cranking it up. And if the steering wheel is off-centre when you drive straight, book a geometry check. A pothole can knock alignment out by a surprising amount.

Alignment, bearings and the bits you can't see

A wheel that looks fine can still be out of true. A tyre fitter can spin it on a balancing machine and spot a bend that you would never see by eye. If you have a persistent vibration after a hit, balancing and a runout check are money well spent.

Listen, too. A whine or rumble that changes with road speed can be a wheel bearing. A clunk when you turn can be a suspension component. These are not jobs to diagnose by forum guesswork. A local independent garage with a decent ramp will find more in ten minutes than you will in an hour on your back.

Building a pothole claim file for 2026

If the damage is significant, you may want to claim against the local highway authority. The process is not a magic money tree, but a clear file helps.

Start with photos. Take wide shots showing the pothole in context, then close-ups with a tape measure or a coin for scale. Note the date, time and a precise location. A what3words pin or a dropped map pin is useful. If you have dashcam footage of the hit, keep the original file, not just a screenshot.

Report the pothole to the council, even if you are not claiming. Most authorities have an online reporting tool, and the report creates a timestamp. Keep receipts for tyres, alignment, wheel repairs and any hire car. Get a written diagnosis from the garage, not just a verbal one.

Then use the council's claim form. Be realistic: authorities often argue they have a reasonable inspection regime, and each council in Devon and Cornwall will have its own process. If the repair cost is close to your insurance excess, think carefully before involving insurers. A claim can affect future premiums, and aftermarket wheels or suspension changes should always be disclosed.

What not to do

Do not keep driving on a sidewall bubble. Do not try to hammer an alloy straight yourself. Do not overinflate a tyre to chase a leak. And do not use a can of sealant as a permanent fix for sidewall damage, especially on a car that covers Cornish B-roads regularly.

Drive to survive

Keep tyre pressures right, leave a decent gap so you can see craters early, and avoid aiming for the puddle that is hiding one. Report the worst holes. Pothole season may never truly end, but a bit of vigilance keeps a bad hit from turning into a bent wheel, a wrecked tyre and a tedious claim.